R-10 Red River Ultralight Upper Receiver Group


R-10 Red River Ultralight Upper Receiver Group


As of 7/5/2022: The extrusions to make handguards have been delivered!  We now need to start manufacturing handguards and fulfilling our backlog of orders in the order they were received.  We hope to be fully caught up and be in stock for current orders in September.

As of 5/17/2022: There has been a delay in the delivery of the handguard extrusions.  We are now expecting delivery in the first half of June.  This means that orders with Handguards should start shipping sometime from late June to early July, depending on when in June we receive the extrusions. We apologize for this getting pushed back further.  

As of 2/24/2022: We are all out of metal to make Handguards.  More material is on order and should be delivered to us within 2 months. Rifle, Upper Receiver Group and Handguard orders from the end of February on should start shipping in May.

The R-10 is the first in a new generation of AR-style Upper Receiver Groups (URG). Utilizing unique magnesium alloys, this URG sheds weight without compromising integrity. Chambered in .308 Winchester/7.62x51mm NATO, the R-10 Red River Ultralight URG weighs less than many AR-15 URGs. Built from the ground up, focusing on hunters’ needs, the R-10 does not compromise accuracy or durability while weighing 3.9 lbs with a low mass steel BCG or 4.1 lbs with a full mass steel BCG. Designed to be compatible with SR25/DPMS Lower Receivers, the R-10 comes standard with a Cerakote® finish, and premium components such as the Radian® ambidextrous charging handle. Whether it’s a day at the range or a once in a lifetime bull Elk hunting trip, the R-10 will let you travel light and roam far™.


About This Product



3.9 Lb. with No Forward Assist and Low Mass Steel BCG
4.1 Lb. with Forward Assist and Full Mass Steel BCG


.308 Winchester / 7.62x51mm NATO


Flat Dark Earth


16" Pencil Weight, 1:10 Twist

Gas System

Mid-Length, Direct Impingement

Gas Block

.750" Adjustable, Bleed Off, 30 Position


15" M-LOK® Split Picatinny

Muzzle Device

Titanium Thread Protector. Thread Type: 5/8-24

Charging Handle

Radian Raptor Ambidextrous

Overall Length

25 1/8"




  • UPPER RECEIVER: DPMS GEN 1 Compatible, Low Profile. CNC Machined Roam Magnesium, Protected by TAGNITE, Finished with Cerakote. Features Dust Cover and Molded Brass Deflector. Forward Assist is Optional
    • Forward Assist BCG: Full Mass Steel BCG, Black Nitride Finish
      • 9310 Tool Steel Bolt (Magnetic Particle Inspected), 8620 Alloy Steel Full Mass Bolt Carrier, DPMS Forward Assist Serrations, Black Nitride Finish
    • Smooth Sided BCG: Low Mass Steel BCG, Nickel Boron
      • C158 Bolt Assembly DPMS (Shot Peened) with Billet Extractor, 8620 Alloy Steel Low Mass Bolt Carrier, Nickel Boron Finish
  • CHARGING HANDLE: Radian Ambidextrous Raptor-LT 7.62 Charging Handle, 7075 Aluminum, Type III Hard Anodize
  • BARREL: Faxon Match Grade 16″ Pencil Weight Profile Barrel, Chambered in .308 Winchester, 1:10 Twist, 5R Button Rifling, 416R Stainless (Magnetic Particle Inspected), 11 Degree Polished Target Crown, NP3 Extension, QPQ Barrel Bore and Exterior Finish
  • GAS SYSTEM: Mid-Length, Direct Impingement
  • GAS BLOCK: Superlative Arms Adjustable .750″ ID, 30 Position, Patented Bleed Off Mechanism, Low Profile, Melonite Finish
  • MUZZLE DEVICE: Titanium Muzzle Protector. Thread Type: 5/8-24
  • HANDGUARD: Free Floating 15” Roam Magnesium Split M1913 Rail, M-LOK, Two QD Sling Mounts, Protected by TAGNITE, Finished with Cerakote